Peters, Thomas J.
Sang saka gotra, 1985
Buku Teks
Peters, Thomas J.
Harper & Row, Publishers, 1986
Buku Teks
Peters, Thomas J
Harper & Row Publisher, 1982
Buku Teks
Hisrich, Robert D., author
D.C.Heath, 1986
Buku Teks
Ball, Donald A., author
Salemba Empat, 2001
Buku Teks